Valve-silencer.



P. A.: ISBNBBRG. VALVE SILENGER.

APPLICATION FILED AUG. 15, 1910.

.Patented July 11, 1911.

llllilu llllll UNiTED STATES? PATENT onirica'.

PUL A.fISENBERG-, 0F CHICAGO, ILLINOIS.

- VALVE-SILENCER.'

Specification of Letters latent.

Patented .iuiy 1 1, i911'.

Application led August 15, 1910. Serial.No. 577,248.

y To all whom it may concern:

Ais a plan of 'the silencing clip.

l it known that I, PAUL AQIsnNnnc, a citizen of the United States, residing at Chicago, in the county of Cookand State 'of' Illinois, have invented'a certain new and useful Improvement in `valveilencers, of-

A and Fig. 4t is a central section of the inlet valve and associated parts.

. Similar numeralsfrefcr to similar parts throughout ,the several views.

Referring to the form of apparatus selected to illustrate the invention, the engine cylinder 1 is provided with a piston 2 of any suitable construction. The valve boX 3 has an outlet valve 4t controlling the eX- haust 5 in the manner common to this type of engine. An inlet valve casing 6 is screwed finto the box 3 and is provided with a longitudinally apertured sleeve 6a which forms e a guide for the stem 7 of the. inlet valve8. 35.

On the outer end of stein 7 is rigidly secured a head 9 which is engaged by a compression spring 10,or normally holding the valve 8 closed. Said spring is interposed between the top 6b of casing -6 and the under side of head 9, and preferably surrounds sleeve 6 which tends to hold the spring in position. The head 9, spring 10 and upper end of the valve stem are housed within a dome- A shaped cap 11 which is secured to casing 6,

as shown in Figs. l and 4. A ring or disk 9a is formed upon head 9, and makes slidingcontact with the lingers of the clip '12. In its preferred forinsaid clip is approximately dome-sliaped and) is secured by* a rivet 13 or otherwise to the inside of cap 1l conccntrically therewith, and in such p0- sition that the fingers of the clip, which are formeel of spring metal, will frictionally engage the sides of the disk 9ri ,and retard the movement of said disk and parts attached thereto. By preference the clip is.

formed of a single piece of springl sheet ine-tal, as shown.

In operation, valve 8 is normally held closed by spring 10, supplemented at times by thepressure of the gases within the engine cylinder. VlThem'however, the cylinder is to receive a charge of gasolene vapor or other inflammable gas the suction created by the downward movement of the piston causes the valve to open to admit the charge.

.The torce of the suction is, of cpurse, b'alf anced against the force of the spring and without the clip the valve is so sensitive as to vibrate when the charge is being sucked in, resulting what is termed a snoring noise. My clip, however, acts as a retarder, reducing t-he sensitiveness of thefvalve and ett'ectually preventing ythe noise.- It .also serves to reduce the clicking noise due to the shock from' the sudden arresting of the valve` in opening or closing. In a gasolene engine runningkat normal speed the sudden opening and closing of the inlet valve` also :produces a loud and rapid clicking noise, and causes a vibration which is very -annoying, especially in the case of motor cycle engines. Ot course this noise and vibration is not affected' by the engine muttler, and the mutlling of the engine serves only to bring out by comparison the noise due to the operation of the valve.

It will be noted that' the clip is simple in construction, and is durable `because it is protected from the heat of the gases by the stationary parts interposed between the clip It takes no and the gases ot combustion. additional space and is protect-ed by the cap ll from contact with outside objects.

Having thus described my` invention, whatL I claim as new and desire to secure by Letters. Patent is v 1. In combination, a valve casing, a valve nioable in a straight line therein, a spring tending to constantly urge wsaid valve in one direct-ion therein, and a dome shaped spring clip adapted to exert pressure radially inward toward a portion of said valve from different 'point-s around it for ret-arding the action of the valve. n

2. In combination, a valve casing, an inlet valve controlling` the passage there In Witness whereof, I have hereunto subthrough, a spring for normally holding said scribed my name in the presence of two valve c1osed,' a disk connected to said Va1ve,` witnesses.

a cap over said disk and spring and a clip secured to said cap and adapted to frictionally engage the sides of said disk for silencing said valve.

PAUL A. ISENBERG. Vitnesses HOWARD M. Cox, MARGARET D.V Ro. 

